## Question

###### When a wave is propagated from rarer medium to denser medium, which of the following will remain unchanged ?(a) Wave speed(b) Propagation constant(c) Frequency(d) None of the above

When a wave is propagated from rarer medium to denser medium, which of the following will remain unchanged ? (a) Wave speed (b) Propagation constant (c) Frequency (d) None of the above

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